Ore-crushing machine



-Patented Apr. Il, 1899.

`n n. LANE. ORE CRUSHING MACHINE.

(Appucatimmed my 11, 189s.)

(No Model.)

W/TNESSES NITED vSTATES PATENTA rrrca.

CHARLES C. LANE, OF LOS ANGELES, CALIFORNIA.

oRE-oRUsi-IING MACHINE.

SPECIFICATION forming part of Letters Patent No. 623,088, dated April 1 1, 1899.

Application led May l1, 1898. Serial No. 680,383. (No model.)

T0 @ZZ whom it may concern:

Beit knownthat I, CHARLES C. LANE, acitizen of the United States, residing at Los Angeles, in the county of Los Angeles, State of California, have invented a new and useful Improvement in Ore-Crushing Machines, of which the following is a specification.

My invention relates to improvements in that class of ore-crushing machines in which crushing-rolls are caused to travel upon annular dies situate in the bottom of an annular pan.

The object of my invention is to provide an ore-crushing machine of small dimensions at little expense that lcan be easily operated with a small amount of power, it being adapted as to size and mechanical construction with a view to the use of animals as a motor power and its location in inaccessible places where large and heavy machinery could not be located with profit or at all.

My invention consists in the novel means of operating the crusher by aiixing to the frame journals in which the axles of the crushing-rolls are mounted, so that the rotation of the frame will cause the rolls to move,

means of regulating the pressure of the crushing-rolls and the formation of the same, in

providing suitable channels at the sides of the dies for the amalgam, in providing a revolving continuous feed, and in other features herein described and claimed.

I attain these objects by means of the mechanism described herein and illustrated in the accompanying drawings, in which- Figure l is a central vertical section of the machine. Fig. 2 is a plan view of one of the crushing-rolls with its axle and showing the mechanism for its adjustment and also a lever or arm att-ached for the use of animal power.

A is a circular pan, on the bottom of which are annular dies B. These dies are preferably made of steel in the form of rings like Wagon-tires and placed one over the other, making a compact whole. They maybe made in sections or, if preferred, cast in one solid piece. I prefer them made as shown, as they are more easily handled and replaced when worn out. The bottom C of the pan is made of wood of suitable thickness, securely fastened to the usual bed-timbers. (Not shown in the drawings.) The rim A of the pan ispreferably made from sheet-iron.4 Inside of the rim and resting on the bottom C is an annular ring of Wood D, having a sloping top, on which is placed a strip of rubber packing L, having a flange extending up alongside the rim. On this ring of packing is placed a ring M of sheet-copper. Resting on the bottom C, adjacent to the ring D, is an annular ring g of iron. Between the ring g and the dies B is a securely-wedged ring of wood f, the top of Awhich is lower than the top of 'the dies. On the inner side of the dies is wedged a similar wooden ring e, and adjacent thereto is an annular ring of iron d. Adjacent to the ring d and securely fastened tothe bottom Cisa circular ring h, preferably made of sheet-iron. The ring b and the rim A form the sides of a trough X' for holding the material to be crushed, the bottom of the trough being formed of the dies and wooden rings e and f.- The tops of the rings e and f, being lower than the dies and adjacent rings, form channels Y for the reception of quicksilver. At a suitable point in this circular trough the rim A', rings D M, and packing L are cut away to a level with the top of the ring g to form the usual sluice-gate, which is provided with the usual screen. (Not shown in the drawings.)

Slidably mounted on the central stationary vertical shaft E is a plate F, having slots F for mounting thereon journal-box H, which forms a bearing for the inner end of axle I. These slots in the plate F permit the adjustment of the' inner end of the axle I, so that it is r-adial or non-radial to the path of revolution of the rolls O. The purpose'of this adjustment is to give greateror less grinding motion to the rolls() in their passage over the dies. The opening in the journal-box H is large enough to permit the axle Ito have the necessary vertical movement. On the outer end of the axle I are mounted the crushingrolls O. These rolls may be constructed of any suitable material. I prefer to construct them in two parts, the central part O of wood and the tire O2 of steel. The axle I also-passes through a j ournal-box N, (shown in section in Fig. 2,) slidably mounted in the frame P between the standards P4. The journal-box N is partly convex on its outer sides to permit IOO of the axle being shifted at its inner end, as shown in Fig. 2. The frame P is preferably constructed of angle-iron. It consists of the annular ring P at the bottom, annular ring P2, securely bolted' to a strong wood top P3, eight standards P4, one on each side of the axle, forming a support for the axle-journal N. These standards are braced by brace-rods P5. The inner surfaces of the standards Ptl are slightly concave on their inner faces, providing therebya movable fit for the journalbox N, as shown in Fig. 2. Securely fastened around the circumference of the top P3 is a metal ring P6, forming a drum or pulley for a driving-belt, (not shown,) whereby the frame P, carrying the rolls O, may be rotated. Over the journal-boxes N and between the upright standards Pl are mounted strong spiral springs T to give a yielding pressure to the axle of the rolls O as the rolls pass over unequal thicknesses of ore on the dies B. The tension of the springs T is regulated by means of the screws V, which pass through the threaded followers V', slidably mounted in' standards P4. As the followers V do not rotate when the screw V is rotated, it forces the follower V down upon spring T, which thereby presses on journ al-box N,and thus enables a different pressure to be put on each crushing-roll. On the top of the frame'is the feedhopper J, fastened thereto by standards J. The hopper. J has a shaking bottom J2, which is attached to the hopper by chains J3. Attached to the bottom J2 is an iron lug J4, adapted to strike against the pin K', and thereby impart to the bottom J2a shaking motion on each revolution of the frame. Should one pin be insufficient to give the bottom the shaking required more can be added.- Leading from the feed-hopper J to the trough in front of one of the rolls O is a chute NV, af-` fixed to and carried by the frame P and adapted to discharge the ore directly in front of one of the rolls upon the dies B. On the stationary shaft E, near its top, is placed a nut 7L' to securely fasten the bottom C and frame P together. Between the nut h and the top P3 of the frame are mounted ball-bearings R.

The stationary vertical shaft E passes through the bottom C of pan A and through the wood top P3 of the frame and has nuts h and h screwed thereon `to keep-the parts from separating when ore is being crushed. Quicksilver is put in the channels on each side of the dies. opposite the Hush-gate. (Not shown in the drawings.) The frame carrying the crushingrolls is caused to rotate. re is fed into the hopper and is carried through the chute and discharged upon the dies in front of one of the rolls, thereby giving a-n even feed of ore along the whole face of the dies. is crushed the gold separates from the rock and is caught by the Quicksilver in the chanmaterial.

Water is run into the pan' As the ore.

nels. VIt will be observed that by my form of construction the dies can be worn first on one face and then changed to the other, thereby obtaining more wear out of them than if they could notbe turned; also, that when worn out they can be replaced without injury to the other parts of the machine; also, that by making the crushing-rolls with a steel tire the tire can be replaced by a new one when worn out. It will be further observed that as the bottom of the pan carrying the dies is connected with the frame carrying the crushingrolls any desired pressure can be put upon the crushing-rolls by means of the screws by which they are adjusted, and tliatjas each roll has a separate adjustment it may have a different crushing power on the ore from the others.

I have shown a machine having four crushing-rolls; but a machine having two or more rolls would Work as well. If desired, the copper plate M, packingrL, and the wood ring D can be omitted. By making the rim A and inner ring b strong enough the rings of iron CZ andg could be dispensed with. Theirprincipal use is to give strength, and thereby enable the rim A and ring hto be made of light In Fig. 2 I have shown an arm X projecting out from 'the plate F, to which the inner end is aiXed at Z', then over the annular ring P, on which the outer bearing Z of the arm is attached. This arm is provided with whiiiletrees, (not sl1own,) to which an animal may be hitched, providing means to operate the crusher with animal power, this being essential to a crusher of the size of mine, where steam or other power is not obtainable.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is'- In an ore-crusher the-combination of the circular pan A; dies B resting on the bottom of pan A; the central vertical shaft E; the removable circular plate-F formed with slots F movably mounted on the shaft E; ring P', standards P4 mounted on ring P/g actuatingdrum PG; swiveled journal-boxes N movably mounted in standards P4; spring T mounted between lstandards P4 over journal-boxes N; screws V with threaded screw-followers V', the followers slidably mounted in standards P4 over springs T; shafts I mounted in journal-boxes N and having the bearings for their inner ends laterally adjustable in the slots F and the edge-runners or crushing-rolls O mounted upon shaft I, substantially as dcscribed.

Signed by me, at Los Angeles, California, this 27th day of April, 1898.

y CHARLES C. LANE. Vitnessesz WM.- T. HUMBERT,

G. E. HARPHAM.

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